From: Eric Valette <eric.valette@free.fr>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: DMA debug trace pointing to rtl8187
Date: Wed, 06 May 2009 08:35:52 +0200 [thread overview]
Message-ID: <4A012FC8.3020304@free.fr> (raw)
In-Reply-To: <20090506133131F.fujita.tomonori@lab.ntt.co.jp>
FUJITA Tomonori wrote:
> CC'ed linux-usb,
>
> The ehci_hcd driver uses buffers on the stack for DMA?
>
> On Sun, 03 May 2009 17:36:24 +0200
> Eric Valette <eric.valette@free.fr> wrote:
>
>> ------------[ cut here ]------------
>>
>> WARNING: at /usr/src/linux-2.6.22.9/lib/dma-debug.c:609
>
> Hmm, the kernel version is wired. lib/dma-debug.c was added in
> 2.6.30-rc.
No that's the file path. I use ketchup to apply patches...
>
>> check_for_stack+0x6b/0x8b()
>> Hardware name: P5W DH Deluxe
>>
>> ehci_hcd 0000:00:1d.7: DMA-API: device driver maps memory fromstack
>> [addr=ffff88007fa79968]
>> Modules linked in:
>>
>> Pid: 297, comm: khubd Not tainted 2.6.30-rc4-git1 #32
Here is the real version.
-- eric
next prev parent reply other threads:[~2009-05-06 6:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-03 15:36 DMA debug trace pointing to rtl8187 Eric Valette
2009-05-06 4:30 ` FUJITA Tomonori
2009-05-06 5:21 ` Greg KH
2009-05-06 6:35 ` Eric Valette [this message]
2009-05-06 6:45 ` Greg KH
2009-05-06 18:02 ` [RFT] rtl8187: use DMA-aware buffers with usb_control_msg John W. Linville
2009-05-08 23:20 ` Hin-Tak Leung
2009-05-09 9:38 ` Eric Valette
2009-05-09 13:57 ` Greg KH
2009-05-09 15:50 ` John W. Linville
2009-05-09 16:35 ` Greg KH
2009-05-09 21:24 ` Larry Finger
2009-05-11 13:20 ` John W. Linville
2009-05-11 22:23 ` Hin-Tak Leung
2009-05-06 18:03 ` DMA debug trace pointing to rtl8187 John W. Linville
2009-05-09 17:29 ` Larry Finger
2009-05-09 17:46 ` Eric Valette
2009-05-09 19:22 ` Eric Valette
2009-05-09 19:29 ` Greg KH
2009-05-09 20:19 ` Michael Buesch
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